Endoscopic retrograde cholangiopancreatography in elderly patients: Difficult cannulation and adverse events

Table 5 Multivariate analysis of risk factors for post-endoscopic retrograde cholangiopancreatography considering difficult cannulation, age ≤ 65, female gender, cholangitis, and Charlson Comorbidity Index ≥ 2

	Adjusted odds ratio	95% Confidence interval		P value
		Lower	Upper
PEP
Difficult cannulation	4.527	2.078	9.860	< 0.001
Age ≤ 65 yr	3.460	1.511	7.922	0.003
Female	2.362	1.089	5.124	0.030
Cholangitis	3.261	1.204	8.832	0.020
CCI ≥ 2	2.253	0.923	5.497	0.074

PEP: Post-endoscopic retrograde cholangiopancreatography; CCI: Charlson Comorbidity Index.